const int LED_BUILTIN =13;
void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
pinMode(LED_BUILTIN, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
int sensorValue = analogRead(A0);
  delay(100);
  Serial.println(sensorValue);
  if(sensorValue>25)
  {
    digitalWrite(LED_BUILTIN,!digitalRead(LED_BUILTIN));
   }
}
